Address vatican, italy Map, Website
No trip to Rome is complete without a visit to the Vatican. For young very young kids, the marble floors, not the high ceilings, are the draw. Don't be afraid to let them get kneel down to take a closer look. Kids might also enjoy rubbing the foot of the bronze St Peter's statue.
Lines can be long, so arrive early in the morning (before the tour busses) to beat the crowds. Strollers cannot be brought inside and must be checked (you will be given directions after clearing security). You'll be covering a lot of ground once you are inside, so consider bringing a sling. Also note that even young kids will need to adhere to the dress code.